A CLI tool that searches inside class and className attributes and matches against each class name individually. Use this instead of grep when searching or replacing class names.
Class Name Search Guide
Windows CLI Setup
- Run
echo --% - If output is empty (PowerShell): Add
--%before arguments (e.g.,--% '^flex$') - If not PowerShell: Run
npx -y node -e "console.log(process.argv[1])" "^test". If output istestinstead of^test, escape^as^^(e.g.,^flex$→^^flex$)
See CLI Reference for details.
Count matched class names per file
[!WARNING]
AI manual counting is unreliable. Always use this command to count class names.
Command:
npx classname-search stats 'src/**/*.jsx' 'text-'
Output:
src/components/Header.jsx: 3 matches
src/components/Main.jsx: 4 matches
Total: 7 matches in 2 files
[!NOTE]
By default, only files containing matched class names are listed.
Use the--verboseoption if you want to include files with 0 matches in the output.
Search for class names
Command:
npx classname-search search 'src/components/**/*.jsx' 'flex'
Output (search):
{"file":"src/components/Header.jsx","line":3,"matched":"flex","className":"flex","classValue":"flex flex-col"}
{"file":"src/components/Header.jsx","line":3,"matched":"flex","className":"flex-col","classValue":"flex flex-col"}
{"file":"src/components/Header.jsx","line":4,"matched":"flex","className":"inline-flex","classValue":"inline-flex"}
[!IMPORTANT]
matchedis the regex match;classNameis the full class name containing that match.
File output:
Redirect output to a file for large results or when requested by the user.
Working from file output is strongly recommended to avoid truncation and hallucination.
npx classname-search search 'src/components/**/*.jsx' 'flex' > 'filename.jsonl'
Search and replace class names
Command:
npx classname-search replace 'src/components/**/*.jsx' -- '-slate-(\d+)$' '-neutral-$1'
Output:
Replaced 8 matches of "-slate-(\d+)$" with "-neutral-$1" in 3 files.
Remove class names
Command:
npx classname-search remove 'src/components/**/*.jsx' '^font-normal$'
Output:
Removed 5 matches of "^font-normal$" with "" in 2 files.
CLI Reference
Fetch https://raw.githubusercontent.com/yuichiroharai/classname-search/main/README.md
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